Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

68°
H -°
L 61°
S
0mph
Low tide
12:30 am
Photo Credits

Tides Today & Tomorrow in Squamscott River, Great Bay, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : in 2h 53m at 12:30 am (0.6 ft)
Next high tide (tomorrow) : 6:23 am (6.2 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Sep 1941

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:196.810:407.74:240.04:400.46:077:19Waxing Gibbous1Mon
2Tue11:226.911:417.85:29-0.15:440.36:087:17Waxing Gibbous2Tue
3Wed12:187.16:27-0.26:410.26:097:16Waxing Gibbous3Wed
4Thu12:357.91:097.37:18-0.37:320.06:107:14Full Moon4Thu
5Fri1:257.91:567.48:05-0.48:20-0.16:127:12Full Moon5Fri
6Sat2:127.82:397.48:48-0.39:04-0.16:137:10Full Moon6Sat
7Sun2:557.73:197.49:28-0.29:460.06:147:09Full Moon7Sun
8Mon3:367.53:577.310:060.110:260.16:157:07Waning Gibbous8Mon
9Tue4:167.24:357.210:430.311:060.36:167:05Waning Gibbous9Tue
10Wed4:576.95:137.011:210.611:490.56:177:03Waning Gibbous10Wed
11Thu5:406.65:566.912:020.86:187:01Waning Gibbous11Thu
12Fri6:276.36:426.712:340.712:461.16:197:00Third Quarter12Fri
13Sat7:176.17:326.61:230.91:341.36:206:58Third Quarter13Sat
14Sun8:116.08:256.52:151.02:261.46:216:56Third Quarter14Sun
15Mon9:075.99:216.63:101.13:211.46:226:54Third Quarter15Mon
16Tue10:046.010:186.84:081.04:191.36:246:52Waning Crescent16Tue
17Wed10:576.311:117.15:030.75:141.06:256:51Waning Crescent17Wed
18Thu11:456.75:520.46:050.66:266:49Waning Crescent18Thu
19Fri12:007.412:307.16:380.06:520.16:276:47New Moon19Fri
20Sat12:467.81:137.67:22-0.37:39-0.36:286:45New Moon20Sat
21Sun1:328.01:577.98:05-0.68:26-0.76:296:43New Moon21Sun
22Mon2:198.22:428.38:50-0.89:14-0.96:306:42New Moon22Mon
23Tue3:078.23:288.49:36-0.810:04-1.06:316:40Waxing Crescent23Tue
24Wed3:578.14:168.510:24-0.710:55-1.06:326:38Waxing Crescent24Wed
25Thu4:497.95:088.311:15-0.511:51-0.86:346:36Waxing Crescent25Thu
26Fri5:467.66:068.112:10-0.26:356:34First Quarter26Fri
27Sat6:487.27:087.812:51-0.51:100.16:366:33First Quarter27Sat
28Sun6:547.07:157.61:55-0.21:150.45:375:31First Quarter28Sun
29Mon8:016.98:237.42:020.02:230.65:385:29Waxing Gibbous29Mon
30Tue9:086.99:297.43:100.13:320.65:395:27Waxing Gibbous30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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Common Questions About Squamscott River, Great Bay, NH Tides

Collapse All
Is this week a spring tide or neap tide in Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, NH is currently in a transitional phase. Tonight's moon is 30% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Squamscott River, Great Bay, NH tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Squamscott River, Great Bay, NH?

Tide predictions for Squamscott River, Great Bay, NH come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Squamscott River, Great Bay, NH?

Tide data for Squamscott River, Great Bay, NH is sourced from NOAA Station #8422687. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8422687.

What is the moon phase in Squamscott River, Great Bay, NH tonight?

Tonight the moon over Squamscott River, Great Bay, NH is Waxing Crescent (30% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

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